I promise he didn't, try watching at .25x speed you can probably see it more easily. It's really hard to see though bc of all the shit going on, but he did not get stunned, bubbled, or cc'ed by anything actually.

I promise lol he really isn't cc'd, it might be hard to see but what you're probably seeing is him pathing upward very slightly before he dies. He really wasn't cc'd, all good if you can't see though bc its really hard to see I had to watch it multiple times